def greet_user (names):
    for name in names:
        msg = "Hello, " + name.title()
        print(msg)


usernames = ['hannah', 'ty', 'margot']
greet_user(usernames)

unprint_design = ['iphone case', 'robot pendant', 'dodecahedron']
print(unprint_design[:])
completed_models = []

while unprint_design:
    current_design = unprint_design.pop()
    print("Printing model:" + current_design)
    completed_models.append(current_design)

print('\nThe following models have been printed')

for completed_model in completed_models:
    print(completed_model)


def make_pizza(*toppings):
    """ 打印客户点的所有配料 """
    print("\nMaking a pizza with the following toppings: ")
    for topping in toppings:
        print("- " + topping)

make_pizza('')